Magnum Opus is a modern autoflowering cultivar derived from 20 Guage. This strain is designed for both indoor and outdoor cultivation, boasting an easy difficulty level for growers, though it produces a low yield over its 85-day flowering period. Its genetic legacy includes notable offspring such as Fruit Flambé, Fruit Tartare, Alien Opera, Cannatose F1, Cherry Royale, Death Note, Dreamcoat V1, and Ghaznavi.

The terpene profile of this THC-dominant strain begins with a dominant presence of myrcene, followed by limonene, caryophyllene, and pinene. The sensory experience is further nuanced by terpinolene, linalool, humulene, and beta-pinene, with trace amounts of ocimene, nerolidol, guaiol, bisabolol, camphene, and terpinene contributing to its complex aromatic makeup.

Consumers can expect effects characterized by a sense of being relaxed, happy, and uplifted. These attributes make Magnum Opus a suitable choice for addressing symptoms of stress, pain, and sleep difficulties. Its status as a parent strain continues to influence modern breeding, as demonstrated by its list of progeny.